The following safety measures are taken during civil engineering construction. (i) Suitable scaffolds should be provided for workmen. (ii) When ladder are used, it should be provided with foot holds and hand holds and inclination of one is to four (1 horizontal : 4 vertical) be provided. (iii) The scaffolding should be properly supported and shall have a guard rail property attached to it. (iv) Every opening in floor of a building should be provided with suitable means to prevent the fall of persons or materials. (v) Fencing and lights shall be provided to protect the public from accident. (vi) The excavated material shall not be placed within 1.5m of the edge of the trench or half the depth whichever is more to avoid collapse of sides due to surcharge. (vii) No undermining or undercutting shall be allowed. (viii) All roads and open areas adjacent to any side where demolition is to be carried out, must be closed or suitably protected. (ix) No electrical cable etc. shall remain electric...
Construction of Cantilever RCC Slab: The following steps would be involved: (i) Form Work: Staging should be designed and erected. The staging shall be of tubular steel structure with adequate bracing as approved or made of built up structural section made from rolled structural steel sections. Shuttering used shall be of sufficient stiffness to avoid excessive deflection and joints should be tightly butted to avoid leakage of slurry. If required rubberised lining of material shall be provided in the joints. Steel used for concreting should be suitably stiffened. It should be properly repaired before use and it should be ensured that it is properly cleaned to avoid stains, honey combing, seepage of slurry etc. The holes, if any must be plugged. Suitable camber shall be provided to counteract the effect of deflection. The camber at free ends shall be 1/50th of the projected length. The shuttering must be coated with mould oil. (ii) Placing of Reinforcement: The reinforcemen...
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